Blender slow response and lag?
This is probably an issue with the nVidia graphics cards and drivers - I had the same problem, and Tyler N supplied one answer. 

Right click on your Blender shortcut, and select "Run with graphics processor > Integrated Graphics." If your computer tells you that "you don't have the privilege to select the graphics processor in this menu ", click "Open Nvidia Control Panel." Under "Program settings" click Add by "Select a program to customize." Add Blender, and then set it to integrated graphics in the box below.

Another alternative would be to download and install the Nvidia 375.95 driver version, which reportedly works okay with Blender.